This week we are stepping back in history for a Bake Off first - Tudor Week. Mary and Paul have set three new challenges that embrace a time when Henry VIII reigned, a time of flamboyant banquets and impressive centre pieces that were Tudor showstoppers.The signature is a Tudor classic - pies. Although a few hundred years ago their pies would have been filled with feathered birds, our bakers will attempt to make a rather more edible version for modern taste of a savoury stuffed pie.In the technical challenge, the bakers face a rather unusual Tudor biscuit that has the them all tied up in knots.Mel pops into Hampton Court to uncover how one sweet delicacy nearly enticed Queen Elizabeth I to marry.And the final challenge is to construct a showstopper that is a spectacle of marzipan, fit to grace the tables of a wealthy Tudor banquet.Which of the five bakers will make it into the semi-final, and who will be leaving the tent?